Vehicle actuated gate



Oct. 22, 1935.

O. D. BOARDMAN VEHICLE ACTUATED GATE Filed April 17, 1955` v 3 Sheets-Sheet 1 Oct. v22, 1935.

o. D. BOARDMAN 2,017,939

VEHICLE ACTUATED GATEr Filed April 17, 1935 5 Sheets-Sheet 2 w V Inventor aardmam,

Patented Oct. 22, 1935 `uNllTlazo STATES PATENT OFFICE 4 Claims.

gate, the present invention being an improvement over that forming the subject matter of a patent granted to me on January 22, 1935, No. :i 1,988,889.

The general object of the present invention is to provide a weight structureraised by the lowering of the treadles by. a vehicle with a pulley and belt assembly for imparting movement to the 1;.0. toggle lever gate. assembly, the weights ofcourse acting to raise the gate after the vehicle has passed through. the gate opening.

' This invention also consists in certain other features of construction and in the combination and arrangement of several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims.

In describing the.. invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or correspondingparts throughout the several views, and in which:-

Figure 1 is an elevation of the improved gate with parts in section.

Figure. 2 is a. vertical longitudinal view with parts in elevation.

Figure 3 is a plan view showing the gate assembly in a roadway.

Figure 4 is a longitudinal sectional view throughY one of the posts shown in Figure 1 with the interior parts in elevation.

Figure 5 isla section on the line 5.-,5 of Figure 1.

"Figure 6 is a fragmentary planV View of the two. treadle operating shafts and their crank arms.

Figure. 7. isa View of a pair of toggle links.

T n these drawings the letter A indicates a longitudinally extending casing placed in the roadway and the top I of which forms a continu;- ation. of. the. roadway, said top being formed with the transverse slot 2; and hollow posts 3 are located one at each end of the slot andV pass therethrough and the lower ends of the posts suitably connected with the casing. A pair of s pargedv longitudinally extending slotsA are formed inr each part of the top and a treadle I isarranged in each slot, each treadle being piv- 505 oted to a part of the casing as shown ati? at that end of the treadle which is remote from the slot. Each treadle is so arranged that a vehicle traveling over-v the top will have its wheels ride over the treadle so that the treadle will be depressed.

A pair of transversely extending rock shafts 1 and 8 are journaled in the casing one` at each side of a pair of posts and each shaft has. an outwardly extending arm 9 thereon spacedJ4 from each end thereof and links Il) connect the two I5 arms of each shaft with the inner endsofeach pair of treadles so that when a pair of treadles is depressed the shaft will be rocked.

A pail` of arms II is connected. to eachs end part of each shaft 'I and Band twosetsof links lll. I2 connect these arms II of thetwo shafts-with a yoke I3 depending from the lower. ends of weights or weight boxes I4 supportedy for vertical movement in the posts by the` guides I5 engaging the eye members I6 attached to theboxes lg or weights. Thus when a pair of treadles, is de.- pressed one ofthe shafts 'I and 8 will be. rocked and this rocking movement will causethe links I2 connected with the arms II ofsaid shaft to raise the weights and as it will be seen frornFigure 5 this movement will' beimpartedA to.v the. other shaft through the otherv set of links. I2. and. the arms I-I of the shaft. Thus it will; be seen that when one pair of treadles is depressedthe other pair will be depressed by means of the two shafts 252 l and 8 and the arms II and` the links. t2..A` Y

A drum or pulley I8 will be Carriedfbyeaeh yoke I3 and a drum or pulley I 9 is rotatablysupported at the upper end of each weighty A shaft 20 is rotatably arrangedin the lower partfofeach @,Q post and a shaft 2I- is rotatably` arranged'in; the top of each post and each shaft carries af pulley 22 and a drum 23. A cable 24 has its lowerternl attached to the bottom of each post as; shown at 25 and said cable passes upwardly over a guide pulley 26 carried by a bracket 21' in eaclr post and around the pulley or drum I8 then. downwardly around the pulley 22 on the lowe'rvend; of the post, the cable being wrapped a plurality of times around the pulley 22 and having its end con- 4.0, nected with the pulley. A secondcable'` 26 has one end attached to the top of the post as shown at 2'I and passes downwardly over a guide pulley 28 carried by a bracket 29 and then the, cable passes around the pulley I9 connected with the top of the weights and then passes upwardly and is wrapped a plurality of times aroundthe upper pulley 22 on the shaft 2|. A cable 39 hasllts ends connected with the drums' of the shafts 20 and 2I after being wrapped around said` drums,these parts being so arranged that as a weight I4 is pushed upwardly as before described the cable 24 will unwind from the pulley 22 and thus.c rotate the shaft 20 so as to cause the drumy 23, to` wind the cable 30 thereon and this pull uponv the cable will cause the upper drum 23 of the shaft 2l to rotate the shaft 2l as the cable is unwinding from the upper drum 23 and thus the upper pulley 22 will be rotated to wind the cable 26 thereon. Of course, as the weights descend the reverse motion of the cables will occur and the cable 3G will be wound upon the upper drum while it is unwinding from the lower drum 23 and the lower cable 24 will be thus wound upon the pulley 22 and the cable 2B unwinding from the upper pulley 22.

The gate proper is composed of the two sets of toggle links 33 and the spaced bars 34 extending across the space between the two sets of toggle links and these bars from the pivots for alternate pairs of links as shown in Figure 2. Some of the bars have their ends extended to pass through the vertical slots in the inner faces of the posts and a board 36 is connected to the top links and acts to close the slot when in lowered position and rests upon the inner ends of the treadles so that the wheels of a vehicle can readily pass from one pair of treadles to the other pair over this board whenrthe gate is lowered. The top pivot 34' or top cross bar extends through the slots 35 and has its ends connected with the cables 3l) as shown at 31 so that the movement of these cables 30 will raise and lower the gate.

Each pair of toggle links have overlapping portions of substantially circular shape as shown in Figure '7 with a substantially V -shaped proj ection 4| extending from each circular portion so that these projections will engage each other and thus limit opening movement of the links as shown in dotted lines in Figure 7. The lower link of each set is pivoted to the post as shown at 43.

Thus it will be seen that the vehicle approaching the closed gate will run over a pair of the treadles and depress said pair and this depression of the pair of treadles will operate the parts so that the other pair will be depressed and the upward movement of the weights l 4 will operate the cables 30 to lower the gate,` the gate passing into the casing between the two posts until the board 36 will close the space between the inner ends of the two sets of treadles so that the wheels of the vehicle can pass readily from one pair of treadles to the other pair. Then when the rear wheels of the vehicle leave the said other pair of treadles the weights I4 will descend by gravity and this action of the weights 'will operate the cables 3Q in a reverse direction so that the gate will be raised.

lIt is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims.

What is claimed is:-

l. A vehicle actuated gate comprising a pair of hollow posts, a weight. in each post, upperand lower drums in each post, a cable having its ends connected to said drums, a gate including a pair of lazytongs structures and cross bars connecting said structures together, means for connecting the upper part Vof the gate to the cables, shafts journaled in the posts and connected with the drums,

a pulley on each shaft, a pulley at each end of each weight, an upper cable having one end c-onnected. to the top of the post and passing around the top pulley of each weight and having its other end connected to the pulley of the top shaft, a

second cable having its one end connected to the bottom of the post-and passing around the pulley at the lower end of each weight and having its other end connected to the pulley of the lower shaft and treadle means for raising the weights by a vehicle approaching the gate, said means including means for depressing the other treadle means when the rst treadle means are depressed.

2. A vehicle actuated gate comprising a'casing having its top forming part of a roadway, said l0 top having a transverse slot therein, a pair of hollow posts passing through the ends of the slot, said top having longitudinal extending slots therein, treadles in the slots and pivotally supported from the casing at their outer ends, a 15 pair of shafts journaled in the casing one at each side of the slot, outwardly extending arms on the shafts, links connecting said -arms to the treadles, a weight in each post, inwardly extending arms on the shafts, links pivoted to the in- 20 wardly extending arms and to the lower ends of the weights, upper and lower shafts in each post, a pulley and a drum carried by each shaft, a pulley at each end of the weights, cables connected at one end to the posts and passing over the pulleys 25 of the weights and connected with the pulleys of the shafts, another cable wound upon the two drums, a gate including a pair of lazytongs structures and spaced bars connected with said structures and means for connecting the top part of 30 the casing at their outer ends, a pair of shafts 40 journaled in the casing one at each side of the slot, outwardly extending arms on the shafts, links connecting said arms to the treadles, a

weight in each post, inwardly extending arms on the shafts, links pivoted to the inwardly extending arms and to the lower ends of the weights, upper and lower shafts in each post, a pulley and a drum carried by each shaft, a pulley at each end of the weights, cables connected at one end to the posts and passing over the pulleys of the weights and connected with the pulleys of the shafts, another cable wound upon the two drums, a gate including a pair of lazytongs structures and spaced bars connected with said structures and means for connecting the top part of the gate to the last-mentioned cable, the posts having vertical slots thereiny through which portions of the gate pass, a board forming the top member of the casing and closing the transverse slot in the top of the casing when the gate is in lowered position.

4. A vehicle actuated gate comprising a pair of hollow posts, a weight in each post, upper and lower drums in each post, a cable having its ends .65

connected to said drums, a gate including a pair of lazytongs structures and cross bars connecting said structures together, means for connecting the upper part of the gate to the cables, shafts journaled in the posts and connected with the drums, a pulley on each shaft, a pulley in each end of each weight, an upper cable having one end connected to the top of the post and passing around the top pulley of each weight and having its other end connected to the pulley of the top shaft, a second cable having its one end connected to the bottom of the post and passing around the pulley at the lower end of each weight and having its other end connected to the pulley of the lower shaft and treadle means for raising the weights by a vehicle approaching the gate, said means including means for depressing the other treadle means when the first treadle means are depressed, each lazytongs structure including links having circular portions at their ends with the circular portions of each pair of links overlapping and each pair having projections at their ends formed with beveled inner sides for limiting opening movement of the links.

ODESSA D. BOARDMAN. 

